Walter o



W. 0. BANDLOW.

FURNACE ATTACHMENT.

APPucATloM FILED FEB. 1.1919.

1 ,318,639. Patented Oct. 14,1919.

ff@ Z QM- To all whom #mag/concern: fw

Be it known that I, WALTER Ol BANDLOW, a citizen `of the UnitedStates, 4residingat Hyde 1 Park, in;` the Vz Acountyof Suffolk and Statey .of- Massachusetts,have invented new and useful Improvements -inFiirnace l -Attachments, of .which the Afollowing `is a specii'ication.;.l Y 4 fr; Lg f Y Y ThisA `device: vrelatesi to attachments for furnaces, heaters and the like andnis :adapted to bei-.attached tothe.V smoke ipipeor tflue i betwee'ntheus'ual 'damperandl the combustion chamber. A

1 The object of the'invention is toprovide a simple -and inexpensive device for introducing air into they Hue vin such 4afiiianner',that there will be a` more completes `andi perfect combustion tof the gases, which are generated withintlie: furnace and which generally pass unconsumedfrom said furnace through said fluefv "fi 1 :"1" Anotherobject of thisfinvention is to provide means `whereby the amount of air4 admitted to the flue'm'ay be regulated. (Still another :object of thisinvention is to so construct the' -device thatit willrequire a minimum amount ofmachine workl andlabr in Aso finishing and assembling thejvarious parts and will not require the services of a skilled mechanic lin attaching Y it to thejflue.

'The invention QoilsiSts ii: the' combina? I tionland arrangement ofparts set'- .forth ink the following speciiicationandparticularly pointed outinthe claimstljiereoffA f -Referring to the drawings??v 1 y:-:=1

Y Figure 1 represents the side" elevation offa furnace with a smoke iiue leading'therefroni upon which yis vmounted-lily"im-provved.fur-

ynace attachmentfg ,n

Fig. 2 is a front elevation of said furnace attachment.-

Fig. 3 is a central vertical section taken on the line 3 3 of Fig. 2. iff f Fig. 4 is a transverse s .c tionitaken on the line i4-4,01 Fgxaff si :cv-:Ln Fig. is a viewlsimila to Fig. 4: illustratimproved attachment to a smoke iiielf i Like numerals refer to like parts throughout the several views of the drawings.v

ing va'ii alternativey method ofapplying f rn'y In the drawings, 10 represents a furnace,

of any'desired type or construction, the same being provided with the usual combustion chamber 11 from which' extends a smoke iiue 12. Y A damper 13 of any desired construction is located` in the smoke flue 12.

ffl v ,friiitiineii ATTACHMENT. v l

ji3'ecifieiiif of iiieriainiif.' fratnteuot. ii, 1' 91e.l u --l'Application:sied-February i; 19195 sensing'. 271.1.,50351Y j "1 .Upon ythe `enterior v Ithe between through ears 17 :upon opposite extremities of theyoke .14. -The Vyoke '14 preferably conforms` atf18 :withthe':curvature of the 'flue 12.-.v- Integral with the yoke-14 nis a cylindrical flange 19 having oppositely disposed open- Y ingsy 20' formed therein.

A :A cup-'shapedV meinberl rotatably .y i*

mounted upon. the' yoke 14,1said cupeshaped member 21 having acylindrical flangef22 which.A is adapted :to fit and turn! u'pon" the flange The flangeV 22 is Eprovided with oppositely disposed openings23. The-cup? shaped? member 21 Lmounted -`upon y'the yoke 14 coperatesfwith Asaidy'okegto form j-a chamber k24 and" saidv member 21 being rotatably mounted uponvthe flange 19 will cop- A eratel with said .yoke :to regulate the amount of 4lair. .which will enter the chamber 24 throughfthe openings ,20T and 23. An elbow which constitutes an air-delivery pipe 'is arranged'to" deliver air from the interior ofi? L:

the chamber 20 to the interior of the flue *12. Y

The elbow 25fis constructed with an arm 26 .and Van arm -27 at right langles thereto. The arm 26 passes throughan opening 2S in' the Vflue 12 and -anliopeni'ng; 29- inthe center of the yoke 14,;'the center :lineofsaid arm 26 ybeing co-incident withthecenterr'line ofv thecylindrical "flange 19 and the Vcylindricalf'lange 22.

Openings 30 are provided adjacent tor/the l jeiidof fthefarm y26 said' openings 30;.being arranged at'I an `angle'of'l() degrees to theV openings. 20which-are provided in7 theA yoke 14. The elbow 25 together with the .cup-

shaped member 21 Vvis Ysecuredto the yoke :fi

lll by-fineansof la bolt o r' rivet' 31'.- :The arm 27V ofthe elbow25is arrangedin the *smoke flue 12. with .its open end 33` directed-.toward the combustion: chamberl of theffurnace 10.

The operation vof my improved furnace at- 5 tachmentf is` f asi follows s Anffopening 1^ 28 is 'ijniadefin the smoke iue 12 between they damper13 and the furnace and through this opening is inserted the'v elbow 25 with its arm 27 directed toward the-, combustion chamber 11. The yoke 14 is then vclamped to thesmoke flue by means of the Vrod 15Y and nuts 16, the entire operation being so simple as not to require the services of a skilled mechanic.

said smoke Ying; device.

Air entering the chamber 24' through .the openings 20 and 23 Will pass from the chamber 24 through the openingsSO in the elbow 25 and thence will be directed; through said elbow to the interior of the flue 12. lVhen it is intended to check the fire Within the Vvfurnace asfor instance Wlienleaving'it for the night, the damper iliisclosedand the air entering the Hue 12 through the air delivery pipe25 -will actito forma-cushion lbetween ithe end .of .the farm 27 `.and the damper 13 which ,Will act to retard :the

.gases .which generally pass unconsumed kthrough v,said flue .and thereby cause: a more :perfect combustion. ofsaid gases in the` combustion 'chamber` off the (furnace. The ordi- :nary ysuction upon Athe fuel Yin :the :furnace .Which is-causedby the draftup'tlieiflue is 4also lessened becauseof :the fact that Y said draft Will not act in asfdirect amanner. upon the.. furnace but Will tend toV dravvfuponthe air :which .is entering the Vflue ftlirough :this device.

:In rF-ig. 5 I haveiillustrated .a somewhat modifiedfmetliod of atuichingmy devicefto the-smoke flue. lnfthis figure a member '35 `is.provided .Withfa dange and ksaid flange is rivetedtothe smoke flue 12 by means .of rivets 37. The member 35 in otlierrespects is similar :to the yoke 114C previously described. All the.other.parts of the ldevice villustrated in .'Fig. 5 k.are exactly the same as I.has been .previously described in i connection with Figs. 1 to 4 :.iiiclusive, and the operationfof the device isthesame in every respect.

-Havingthus-.specifically described my invention, .ivliatil claim and desire by Letters .'Paten'tito.securev is r :1. An :.attaclimeiitffor Va heating n device liaving,in combinatioiua smoke.v flue, a .yoke

attached .to .said smoke R Hue having integral therewith, a cylindricalflange.: ay cup-shaped member superimposed upon said yoke and cooperating .therewith to form a fchamber, andan kair delivery.pipeadapted to 'deliver air from said chamber .to the interior rof flue inthev direction of saidiheat- Y .2. An attachment fora furnace having, in fcombination, a flue, 1.a yoke detachably `mounted upon Asaid flue having integral tliereivithfa cylindrical flange, .an air :delivery pipe i entering said .flue :ifrom ...within saidv-icylindrical flange the inner end of said airdelivery V,pipe beingopen toward said furnace, and a cup-'shaped member rotatably -mountediupon said cylindrical flange and adapted to coperate With said flange to regulatetlie amount of air entering saidA air delivery pipe.

Aeinattachment afor a furnace having, in combination, a Hue, a yoke detacliably mounted upon said `flue, said yoke having .in `Gral fthere-Witli -`a .cylindrical iflange, a

cupshaped member; rotatablyi mounted. upon said yoke, and. cooperating. therewithY to i fo rm `a. chamber, and .airain delivery: pipe entering saidflue.' through said .ynke,` said air. delivery pipe :being constructed 1in the form 1 of lan elbow, one arm of said elbow being .adapted to Areceive lair fromf theevterior' ofsai'd Hue through saidchamber .and .thevotlier arm of :said elbow being adaptedto deliversaid air to -'the .interiori of :said :flue in the.t direction of said furnace.

s4( An g attachment :for furnace hai/ing, in icombinatien, :a iue, ipa `.yoke Ydetachably mounted: upon ,said iue, said yoke lhaving integral itlierewith -a cylindrical flange, openings in -`said .ffl-anga cup-shaped member rotatably mounted upon `said yoke .and

cooperating therewithito form .-a chamber,

mounted upon said yoke and adaptedY to .regulate .the amounti of.iainentciingxsaid air deliveryipipe.V

,ln testimony whereof Lhsave hereunto set my hand in presence of tivo,subseribingwit- WALTER v O. BANDLOV.

lVitnesses EizANKLiNiE. Low, Y,

HERMAN R. HOFFMAN.

Copies-of thispatent mayfbefobtainedforfveeents eaehwbyajddressig the. acnmmissioncr f Patents.

- Washington, D. G.. 

